150 results about "Reservoir volume" patented technology

An automated reservoir filling system for a portable medical device is disclosed. The system includes a vial sealed by a septum partially filled with a liquid and a gas occupying a headspace. The system further includes a reservoir with a volume defined between a reservoir septum and a plunger head. The plunger head is coupled to a plunger arm which is further coupled to a drive system. Further included is a transfer system with a vial end that pierces the vial septum and remains in contact with the liquid, and a reservoir end that pierces the reservoir septum and remains in the reservoir volume. A controller coupled to the drive system to actuates the drive system automatically drawing fluid from the vial to the reservoir through the degas system.

The complexity of a fracture network may be enhanced during a hydraulic fracturing operation by monitoring operational parameters of the fracturing job and altering stress conditions in the well in response to the monitoring of the operational parameters. The operational parameters monitored may include the injection rate of the pumped fluid, the density of the pumped fluid or the bottomhole pressure of the well after the fluid is pumped. The method provides an increase to the stimulated reservoir volume (SRV).

The invention provides an improved test cell for detecting the presence of an analyte in a liquid sample. The device has an elongate casing defining a liquid sample inlet, a reservoir volume, a test volume, and a window through the casing at the test volume. Disposed within the cell is a sample absorbent, a novel biphasic substrate and a reservoir, together capable of transporting an aqueous solution within the casing along a flow path extending from the sample inlet through the test volume and into the reservoir volume. The invention further comprises a method for detecting the presence of an analyte in a liquid sample using the device and a biphasic chromatographic material for carrying out the method.

The invention relates to an amphoteric ionic polymer water base fracturing fluid thickening agent and a preparation method of the amphoteric ionic polymer water base fracturing fluid thickening agent, and belongs to the technical field of propping agent fracturing fluid used for oil and gas reservoir volume increase and injection increasing measures. The amphoteric ionic polymer water base fracturing fluid thickening agent is prepared through copolymerization of alkyl group acrylic amide, acrylic amide, 2-acrylic amide group-2-methyl propane sulfonic acid sodium aqueous solution, cationic monomers, vinyl monomers and polymerizable surface active agent monomers. The amphoteric ionic polymer water base fracturing fluid thickening agent and the preparation method of the amphoteric ionic polymer water base fracturing fluid thickening agent have the advantages that raw materials used for the amphoteric ionic polymer water base fracturing fluid thickening agent are all industrial products, purification treatment is not needed before a reaction, a complexing agent is added so that polymerization of the complexing agent and an initiating agent can be initiated at an appropriate temperature, and the preparation technology is simple; due to the fact that the surface active agent monomers are added, an obtained polymer has a hydrophobic association function and is higher in shearing stability, easy to dissolve, free of pollution and harm and good in sand carrying performance; and the amphoteric ionic polymer water base fracturing fluid thickening agent can be resistant to the high temperature of 180 DEG C, is suitable for fracturing of high temperature strata, has high shearing-resistant performance to meet the requirement of high-flow fracturing construction, has high sand carrying performance and no-residue performance, and causes no harm to reservoir strata.

A method and system is provided for more accurately determining ink in-flow and out-flow to a reservoir in a solid-to-liquid ink phasing delivery system for supplying ink to a printer. The printer throughput is safely maximized with a software algorithm that measures the ink available in the printer reservoir for printing. The algorithm is based on the known amount of ink in the reservoir when a level sensor probe is tripped and then calculates additional changes in ink volume. The process is done until the algorithm determines the reservoir volume is below a predetermined minimum level when the level sense probe senses ink. The algorithm calculates the ink leaving the reservoir using an out-flow model based on pixel counting and calculates ink entering the reservoir using an in-flow model based on a minimum guaranteed amount of ink delivered from the melt heater. A time out period is further calculated in which the reservoir should be refilled, and if not, the system is checked for an ink stick jam.

A computer-implemented method and system for simulating reservoir property trends, including petrophysical trends within facies geobodies, is provided. One embodiment includes discretizing a range of values of the reservoir property to be modeled into at least two categories and utilizing the categories to discretize the associated well data and training image into categorical well data and a categorical training image. An embodiment includes applying MPS simulation using the categorical training image on a stratigraphic grid of nodes discretizing the reservoir volume to create a categorical property model. The embodiment additionally includes applying variogram-based simulation in each sub-region of the categorical property model to create a reservoir property model that reproduces the category histogram of each associated sub-region and models the reservoir property trends.

An implantable medical device for delivering a therapeutic substance including a housing and a volume sensor assembly. The housing includes a stationary wall and maintains a reservoir containing the therapeutic substance and including a base wall movable relative to the stationary wall such that reservoir volume is a function of a spacing between the base wall and the stationary wall. The volume sensor assembly includes a cap, a shaft, a target, and circuitry. The cap defines a passage extending from an open end, and is mounted to the stationary wall such that the open end is open relative to a stationary wall inner face. The shaft has a first end attached to the base wall and a second end maintaining the target otherwise movably arranged within the passage. The circuitry generates information indicative of a longitudinal position of the target relative to the cap, and thus of the reservoir volume.

Cryogenic refrigeration employs a pulse tube cryo-cooler and a dilution refrigerator to provide very low temperature cooling, for example, to cool superconducting processors. Continuous cryogenic cycle refrigeration may be achieved using multiple adsorption pumps. Various improvements may include multiple distinct thermal-linking points, evaporation pots with cooling structures, and / or one or more gas-gap heat switches which may be integral to an adsorption pump. A reservoir volume may provide pressure relief when the system is warmed above cryo genic temperature, reducing the mass of the system. Additional heat exchangers and / or separate paths for condensation and evaporation may be provided. Multi-channel connectors may be used, and / or connectors formed of a regenerative material with a high specific heat capacity at cryogenic temperature. Flexible PCBs may provide thermal links to components that embody temperature gradients. Various components may be pre-cooled, for example via a switchable thermalization system.

An implantable medical device for delivering therapeutic substance including a housing and a volume sensor assembly. The housing includes a stationary wall and maintains a reservoir containing the therapeutic substance and including a base wall movable relative to the stationary wall such that reservoir volume is a function of base wall / stationary wall spacing. The volume sensor assembly includes a cap, a shaft, a target, and circuitry. The cap defines a passage extending from an open end, and is mounted to the stationary wall such that the open end is open relative to a stationary wall inner face. The shaft has a first end attached to the base wall and a second end maintaining the target otherwise movably arranged within the passage. The circuitry generates information indicative of a longitudinal position of the target relative to the cap, and thus of the reservoir volume.

Metering systems and methods are disclosed. A metering system is part of a larger fluidics sub-system that includes a flexible reservoir for storing insulin and a cannula assembly for delivering the insulin into sub-cutaneous tissue. The metering system draws a small dose of fluid from the reservoir and then pushes it down the cannula line and into the patient. The fluid dose is small relative to the reservoir volume, such that many pump strokes are required to completely empty the reservoir.